The Ferguson Rock Slide completely covered Highway 140 between Midpines and Yosemite valley in early 2006. Caltrans built some bridges and a one-lane road to bypass the slide. More at http://yosemiteexplorer.com/albums/v/pow/060615-slide/ and http://abclocal.go.com/kfsn/story?section=news/local&id=6080913. Another panorama at http://gigapan.org/viewGigapan.php?id=4860 shows the view from the barricade on Highway 140.